large-hole boring

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• Boring (mechanical) — In machining, boring is the process of enlarging a hole that has already been drilled (or cast), by means of a single point cutting tool (or of a boring head containing several such tools), for example as in boring a cannon barrel. Boring is used …   Wikipedia

• boring mill — noun Etymology: boring (I) : a large machine tool essentially a lathe but commonly with rotating work table, fixed cutting tools, and a vertical axis * * * Metalworking. a machine for boring large holes in heavy work, having a table on which the… …   Useful english dictionary

• Large Hadron Collider — LHC redirects here. For other uses, see LHC (disambiguation). Coordinates: 46°14′N 06°03′E / 46.233°N 6.05°E / 46.233; 6.05 …   Wikipedia

• boring mill — Metalworking. a machine for boring large holes in heavy work, having a table on which the work rotates while the hole is bored vertically. [1825 35] * * * …   Universalium

• boring bit — noun : a steel cutter bit to be supported by a boring bar inside a hole (as the bore of a large gun) in process of enlargement …   Useful english dictionary

• Directional boring — A small directional boring unit in action Directional boring, commonly called horizontal directional drilling or HDD, is a steerable trenchless method of installing underground pipes, conduits and cables in a shallow arc along a prescribed bore… …   Wikipedia

• Down-the-hole drill — A Down The Hole Drill Called DTH in most drilling terms. The down the hole drill is basically a mini jack hammer that screws on the bottom of a drill string. The fast hammer action breaks hard rock into small flakes and dust and is blown clear by …   Wikipedia

• Water well — Village pump redirects here. For information on Wikipedia project related discussions see Wikipedia:Village pump. Water well at the Wald monastery in Germany. A water well is an excavation or structure created in the ground by digging, driving,… …   Wikipedia

• mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium

• Engineering Projects — ▪ 1995 Introduction BRIDGES        Notable Engineering Projects(For Notable Engineering Projects in work, see Table (Notable Engineering Projects).)       As the decade of the 1990s reached its midpoint, the limits to bridge design were being… …   Universalium

• Copenhagen Metro — Info Owner Metroselskabet Locale Greater Copenhagen Denmark …   Wikipedia